Removal of trace quantities of CO from H-2 using temperature-swing-adsorption

A method for the removal of trace quantities (0.2 to 10 ppm) of carbon mono xide in commercial hydrogen using a temperature-swing-adsorption system wit h 0.5 wt% Pt/Al2O3 adsorbent has been investigated. The adsorbent could be regenerated by treatment with air at 200 degreesC to 250 degreesC or by tre atment with hydrogen at 270 degreesC. The breakthrough curves have been des cribed by a model which considers both the external-film resistance and the intraparticle diffusion resistance. The model has been validated at the hi gh gas velocities expected in a commercial plant.